When reading the Saab sales literature for
a new car you can get all the spec's and data on the bells and whistles,
but how about the technical features. I have tried to put some of
the Saab 9-5's changes together for you guys interested in the nuts
and bolts. The 9-5 has turned out to be a very nice car so lets
hope it stays that way. From driving the 9-5 I think this is the
highest quality car Saab has built. You can even get a station Wagon.
Available engines for the US are the 2.3L light pressure
turbo Ecopower B235E (170 horse power), the 2.3L turbo Ecopower
B235R (230 horse power) and the V-6 3.0L light pressure turbo B308E
(200 horse power). The Aero version is fitted with the B235R and
has an "over boosting" feature on 5-speed versions. This
overboosting allows for an extra 20 nm of torque during fast acceleration
. These cars also come with a reinforced gearbox to handle the extra
stress. All the 2.3L engines also have new modified connecting rods
the small ends are trapezoid shaped. This shape increases the wrist
pin bearing surface used during the power stroke. Other new features
to the 2.3L are a new exh cam, reinforced pistons and nitrite hardened
A new system is also being introduced on the 2000 model.
It is called Differential Protection System (DPS). 9-5's with auto
trans now have a new function built in to the Saab Trionic T7 engine
Management system. This DPS protects the gearbox differential during
severe wheel spin. This is not a traction control system but a safeguard
for the auto trans. At speeds below 80 km/h the DPS uses inputs
from the anti lock wheel sensors to detect slip at this point the
Trionic will will limit torque output of the engine using it's electric
throttle. This system uses no extra parts that were not already
fitted to the 9-5. It is a software based function in the Trionic
Over boost function On the B235R Aero engine has been introduced
on manual transmission cars. This function allows the engine torque
to be increased to 370 Nm, 20 Nm more than normal. When the Trionic
system senses the accelerator has been depressed rapidly it will
set in the "overboost" up to an allowed 20 seconds, after
witch the Trionic will will revert to normal. This extra torque
is felt from 1900-4000 Rpm.
The manual gearbox on the Saab 9-5 has redesigned synchro
rings and shift forks. Third and Fourth gears synchros get what's
called a sintered ring this resists wear and gives better shifting
performance. The shift forks have been reinforced to give a more
positive shift. The fifth gear also gets a redesigned synchro ring
The clutch on the aero B235R engine has a larger diameter
plate and is reinforced to handle the added engine performance.
The clutch pedal is also fitted with an auxiliary spring. This spring
is a clutch assist spring, not a return spring. This is to give
the Aero's heavier clutch the same feel as the standard one.
The auto transmission now has a temperature sensitive shift
function. The auto Trans ECU will change shift patterns as the trans
fluid temperature rises. These functions will help cool the trans
under stress situations like towing and climbing steep grades. At
125 degrees C. the lock up torque converter will lock in 3rd &
4th gears. With no slip in the converter this should lower the temperature
at the sacrifice of torque. If the temperature still goes up to
over 140 degrees C. then the converter will lock up in 2nd gear
also. If the temperature continues to rise above 150 degrees C.
the engine torque will be limited to 200 Nm via the Trionic ECU.
If none of these work and the temperature goes above 170°C.
A warning will post on the SID unit "Transmission Overheating"
this will also set a code in the ECU and the Trans fluid should
Front Brakes on the Aero have Larger Diameter rotors the
caliper has been moved outward and a new friction material is used
on the pads.This is to improve performance,pedal feel and noise.
All 9-5 models will use this upgraded pad.
A Sport Chassis package has been introduced And will be
standard on all Aero models. This suspension can be fitted to all
2000 9-5's in about 6 hours labor it includes stiffer and lower
springs (10mm) sturdier roll bars and harder shocks and struts.
And what you have all been waiting for the auto anti dazzle
rear view mirror. This mirror has 2 light sensors and automatically
adjusts your rear view mirror when someone comes up behind you with
there bright lights on.
If you get a chance I suggest you take a 9-5 out for a test
drive. The turbo v-6 is a torque monster and very smooth this is
a much better engine than the old 2.5L v-6. This car is getting
great reviews from everone I have talked to. I think Saab has another